CN103812299A - Actuator and electric beauty appliance - Google Patents

Actuator and electric beauty appliance Download PDF

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Publication number
CN103812299A
CN103812299A CN201310654087.XA CN201310654087A CN103812299A CN 103812299 A CN103812299 A CN 103812299A CN 201310654087 A CN201310654087 A CN 201310654087A CN 103812299 A CN103812299 A CN 103812299A
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China
Prior art keywords
actuator
magnet
utmost point
movable body
magnetic pole
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Granted
Application number
CN201310654087.XA
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Chinese (zh)
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CN103812299B (en
Inventor
高桥勇树
稻本繁典
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Mitsumi Electric Co Ltd
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Mitsumi Electric Co Ltd
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Priority to CN201710475608.3A priority Critical patent/CN107370324B/en
Publication of CN103812299A publication Critical patent/CN103812299A/en
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Publication of CN103812299B publication Critical patent/CN103812299B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3481—Vibrating brush body, e.g. by using eccentric weights
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3873—Electric features; Charging; Computing devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • H02K33/04—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/145—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having an annular armature coil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Dentistry (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Brushes (AREA)

Abstract

The present invention provides an actuator that can realize high power with a simple structure and realize a high output. A movable body (120) includes a cylindrical magnet (123) having on a circumferential surface thereof alternating N and S pole faces along a circumferential direction thereof. An immovable body (110) includes pole teeth (115b, 116b) arranged along the circumferential direction so as to face the circumferential surface of the magnet (123) and that are equal in number to the N and S pole faces, and a coil (114b) that receives an alternating current of a frequency substantially equal to a resonance frequency of the movable body (120) to excite the pole teeth (115b, 116b) to have alternately different polarities in the circumferential direction. The movable body (120) is held by the immovable body (110) in a rotatable manner, and a neutral position for rotation of the movable body (120) is a position at which center positions (CL1) of the pole teeth (115b, 116b) in the circumferential direction and boundary positions (CL2) between the pole faces of the magnet (123) face each other.

Description

Actuator and electronic reason are held beauty appliance
Technical field
The present invention relates to rotate resonance type actuator and electronic reason and hold beauty appliance.
Background technology
At present, in the electric toothbrush as electronic reason appearance beauty appliance, be known to pass through linear reciprocating motion, tilt with the boundary member of tooth and gum (angles of approximately 45 degree) carry out contiguously Pasteur's toothbrush for toothbrushing of side-to-side vibrations and rotatablely move to carry out back and forth (positive and negative) within the scope of the predetermined angular around axle, and the rotation toothbrush for toothbrushing that moves of the mode of the rotation from gum to tooth.
In the time driving these toothbrushes, mostly adopt carrying out the rotation of the common rotary DC motor pivoting, via motion-direction changing mechanism, carry out the structure of straight reciprocating motion or crankmotion.In addition, except this structure, be also known to utilize Linear Driving actuator to make toothbrush carry out the structure of linear reciprocating motion or utilize the vibration of actuator to make resonate and make toothbrush carry out the structure of crankmotion with the synchronous vibration mechanism of the drive source split that comprises actuator.
Utilize Linear Driving actuator to make toothbrush carry out the structure of linear reciprocating motion, as Patent Document 1, utilize Linear Driving actuator directly to produce the axial reciprocating vibration of the output shaft directly linking with toothbrush portion, brush teeth thereby realize Pasteur.In this structure, the power loss that does not exist movement conversion mechanism to produce, and can carry out vibration at high speed.
In addition, have actuator and with the structure of synchronous vibration mechanism of drive source split that comprises actuator, in the vibrating toothbruss in patent documentation 2, be disclosed.This patent documentation 2 utilizes the drive unit that possesses electromagnet and permanent magnet, and the synchronous vibration mechanism that possesses lever arm is carried out to exciting, makes to carry out yaw motion with the coaxial lever arm directly linking of toothbrush portion, brushes teeth thereby realized rotation.
Prior art document
Patent documentation
Patent documentation 1:(Japan) JP 2002-078310 communique
Patent documentation 2: No. 3243529 communique of patent
Summary of the invention
The problem that invention will solve
As like this for electric toothbrush and carry out the actuator of crankmotion, the actuator of the simpler and high output of desired structure.
The present invention develops in view of this point, and its object is, a kind of actuator and the electronic reason appearance beauty appliance that can realize with simple structure high output is provided.
For solving the method for above-mentioned problem
A mode of actuator of the present invention adopts following structure, that is, have: movable body, possesses at side face along the magnet portion cylindraceous circumferentially alternately with N magnetic pole strength and S magnetic pole strength; And fixed body, possess: opposed with the side face of described magnet portion, spread all over circumferentially and configure, and with described N magnetic pole strength and the described S magnetic pole strength utmost point flank of tooth with quantity; With the alternating current that is supplied to the frequency roughly equal with the resonance frequency of described movable body, the described utmost point flank of tooth is carried out to the coil of excitation to replace different polarity on circumferentially, described movable body, rotates and is freely held on described fixed body as rotating reference position using the opposed position of switching position of the circumferential center of the described utmost point flank of tooth and the magnetic pole strength of described magnet portion.
Electronic reason appearance beauty appliance of the present invention adopts the structure of the actuator that possesses said structure.
The effect of invention
According to the present invention, can obtain high-energy conversion efficiency with simple structure, can realize high output.
Accompanying drawing explanation
Fig. 1 is the stereogram that represents the actuator of embodiment of the present invention 1;
Fig. 2 is the stereogram representing below this actuator;
Fig. 3 is the major part exploded perspective view of this actuator;
Fig. 4 is the summary section that represents the major part structure of this actuator;
Fig. 5 is the top plan view that represents the magnetic loop of this actuator;
Fig. 6 is the top plan view of the action for this actuator is described;
Fig. 7 is the figure that is illustrated in the cycle of the alternating current of supplying with from alternating current supply unit to coil in this actuator;
Fig. 8 is the exploded perspective view of the actuator of embodiment of the present invention 2;
Fig. 9 is the top plan view that represents the magnetic loop of this actuator;
Figure 10 is the stereogram that represents the actuator of embodiment of the present invention 3;
Figure 11 is the stereogram representing below this actuator;
Figure 12 is the major part exploded perspective view of this actuator;
Figure 13 is the summary section that represents the major part structure of this actuator;
Figure 14 is the flat sectional drawing that represents the magnetic loop of this actuator.
Symbol description
100,100A, 100B-actuator; 110,110A, 110B-fixed body; 111,111B-base plate; 112-substrate; 113,113B-bearing; 114,114B-coil portion; 114a, 1141-coil rack; 114b, 1142-coil; 115, the upper yoke of 115B-; 115b, 116b, 1155,1165-utmost point tooth; 116,116B-lower yoke; 117-housing; 120,120A, 120B-movable body; 121-arm; 122,122B-rotation axis; 123,123A, 123B-magnet; 124-magnet fixed part; 124B-rotor; 126-exports connecting portion; 126B-output arm; 180-elastomeric element; 184-axle fixture; 186-base fixture; 190-alternating current supply unit; CL1-center; CL2-position; 1231,1232-magnet section.
Embodiment
Below, to embodiments of the present invention, at length describe with reference to accompanying drawing.
(execution mode 1)
Fig. 1 is the stereogram that represents the actuator of embodiment of the present invention 1, and Fig. 2 is the stereogram representing below this actuator, and Fig. 3 is the major part exploded perspective view of this actuator.In addition, Fig. 4 is the summary section that represents the major part structure of this actuator.
Actuator 100 shown in Fig. 1 and Fig. 2 have fixed body 110, movable body 120, by movable body 120 freedom of movement be supported in elastomeric element (resiliency supported portion) 180 (with reference to Fig. 2) and the alternating current supply unit 190 (with reference to Fig. 3) on fixed body 110.
In the actuator 100 shown in Fig. 1 and Fig. 2, movable body 120 (with reference to Fig. 2) is movable with respect to fixed body 110 by the power supply from alternating current supply unit 190, the output arm (following is " arm ") 121 of movable body 120 can rotate along both forward and reverse directions (direction of arrow of Fig. 1) in the angular range of regulation, exports to outside as rotation double vibrations.
As shown in Figures 3 and 4, fixed body 110 has base plate 111, substrate 112, bearing 113, circular coil portion 114 and has the upper lower yoke 115,116 of the comb teeth-shaped of the utmost point tooth (utmost point flank of tooth) 115b, the 116b that configure along the periphery of coil portion 114.
In fixed body 110, substrate 112 is installed on base plate 111.On this base plate 111, in the peristome of central portion setting, insert the base end part of bearing 113, bearing 113 is fixed with the state vertically erecting with respect to base plate 111.
In bearing 113, be inserted with the rotation axis 122 of movable body 120, bearing 113 rotates freely pivotal support rotation axis 122.
The periphery of this bearing 113 dispose by the coil portion 114 that surrounds of lower yoke 115,116.
Coil portion 114 by forming along circumferential winding around 114b on coil rack 114a.Coil rack 114a together with coil 114b for generation of the drive source of actuator 100.The axle of coil rack 114a and rotation axis 122 and coil 114b is same axle center.The coil windings of coil 114b is connected with substrate 112, is connected with outside terminal via substrate 112.Supply with AC power (alternating voltage) from alternating current supply unit 190 to coil 114b via outside terminal.
Upper lower yoke the 115, the 116th, magnetic, is comb teeth-shaped and possesses the vertically disposed utmost point tooth of outer peripheral edges 115b, the 116b from circular body board 115a, 116a.Upper lower yoke 115,116 is to enter the mutual noncontact configuration of mode of coil portion 114 from axial clamp.Upper lower yoke 115,116 body board 115a, 116a separately configures opposed to each other in coil portion 114 Yu in the top and bottom of axial separation, and upper lower yoke 115,116 utmost point tooth 115b, 116b separately alternately arranges in the mode of the outer peripheral face of encirclement coil portion 114.Particularly, upper yoke 115 embeds from the upside of coil portion 114, opposed above its body board 115a and coil portion 114, and utmost point tooth 115b is comb teeth-shaped (separating predetermined distance) along the outer peripheral face of coil portion 114 and arranges.Lower yoke 116 embeds from the downside of coil portion 114, and opposed below body board 116a and coil portion 114, utmost point tooth 116b is similarly disposed at along between the utmost point tooth 115b of the outer peripheral face layout of coil portion 114.
The number of poles of utmost point tooth 115b, the 116b of upper lower yoke 115,116 equates with the number of magnetic poles of the magnet 123 (following) of movable body 120.
According to this structure, if supply with AC power to coil 114b, go up yoke 115, lower yoke 116 is become mutually different polarity by excitation respectively, upper lower yoke 115,116 utmost point tooth 115b, 116b separately also with different polarity by excitation.If coil 114b is supplied to the alternating current of the frequency roughly equal with the resonance frequency of movable body 120 from alternating current supply unit 190, utmost point tooth 115b, 116b are carried out to excitation to replace different polarity.,, on the outer peripheral face of coil portion 114, dispose different magnetic pole strengths along outer peripheral face alternative arrangement.
The polarity of these utmost point teeth 115b, 116b alternately changes by supplying with forward and reverse electric current to coil portion 114.
Opposed with utmost point tooth 115b, the 116b of the outer peripheral face configuration along coil portion 114, separate predetermined distance and dispose the magnet 123 of movable body 120.
In addition, utmost point tooth 115b, 116b are 12 utmost points with the number of poles (following) of corresponding magnet, but as long as 2 extremely more than, several utmost points can.Be not limited to this, as long as multipole.At this, the side face of utmost point tooth 115b, 116b and magnet 123 is opposed, and spreads all over circumferentially and configure, and is identical number of poles with the N utmost point (N magnetic pole strength) of magnet 123 and the S utmost point (S magnetic pole strength).
Movable body 120 has: the magnet fixed part 124 of rotation axis 122, magnet 123, fixed bias circuit 122 and magnet 123.
As shown in Figure 5, magnet 123 is that columnar multipole (at this, being 12 utmost points) magnetizes the magnet forming, and for example, can use Bonded neodymium magnet.
Particularly, magnet 123 with the side face corresponding with utmost point tooth 115b, 116b (at this, being inner peripheral surface) along circumferentially have the N utmost point, the S utmost point, the N utmost point, the S utmost point, the N utmost point ... the mode that replaces like this magnetic pole strength of different polarity is magnetized.The N utmost point, the S utmost point ... each magnetizing surface circumferentially (at this, for week upwards with the direction of rotating shaft direct cross) length is greater than the circumferential lengths of utmost point tooth 115b, 116b.In addition, magnet 123 is for cylindrical shape and be structure as a whole, and in Fig. 5, the position (positions of end SE1, SE2 etc.) of switching as the polarity of adjacent magnetizing surface, for convenience's sake, illustrates with the line of separation.
The magnet fixed part 124 that magnet 123 forms via magnetic is fixed on rotation axis 122.
With respect to the magnetizing surface of magnet 123, utmost point tooth 115b, 116b are positioned at the position that circumferential center CL1 separately is radially overlapping centered by axis of rotation with position (separating the position of magnetizing surface S, the N) CL2 of magnetizing surface N, S (N magnetic pole strength, the S magnetic pole strength) switching of magnet 123.In addition, center CL1, position CL2 radially (are being radial) to coincide with the position on same straight line centered by rotation axis 122, become the rotation action reference position (rotation reference position) of movable body 120., movable body 120, rotates and is freely held on fixed body 110 as rotating reference position using the opposed position of switching position (separator bar) CL2 of the circumferential center CL1 of utmost point tooth 115b, 116b and the magnetic pole strength of magnet 123.At this, actuator 100 is made up of 12 utmost points, and therefore, the slewing area of movable body 120 is to be set to center along the scope of rotating forward or backwards each 15 degree with respect to fixed body 110 with rotation base level.
Magnet fixed part 124 is the cup-shaped being processed to form by deep-draw, makes cylindrical portion hang down and form from the periphery of discoid fixed part body.The inner peripheral surface of this cylindrical portion is installed with magnet 123.
On the fixed part body of magnet fixed part 124, the output connecting portion 126 with the arm 121 extending with rotating shaft direct cross is installed.This output connecting portion 126 via arm 121 to outside transmission of drive force.
In addition, at the central portion of fixed part body, by being pressed into an end that is installed with rotation and freely inserts the rotation axis 122 of bearing 113.
Rotation axis 122 is fixed on fixed part body in the mode being positioned on the axle center of magnet fixed part 124.
The other end break-through of this rotation axis 122 is formed at the axis hole on fixed body 110 (base plate 111).This other end is fixed on base plate 111 via elastomeric element 180 in the rear side of base plate 111.
Elastomeric element 180 is the parts that movable body 120 carried out to resiliency supported with respect to fixed body 110.At this, adopt torsion-coil spring as elastomeric element 180.Rotating shaft 122 rotates the inside of freely inserting this torsion-coil spring.In addition, rotating shaft 122 is positioned on the axle of torsion-coil spring, and the axle center of rotating shaft 122 is preferably consistent with the central shaft of torsional direction.
Elastomeric element 180 is that an end of torsion-coil spring is fixed on rotation axis 122 via axle fixture 184, and the other end is fixed on base plate 111 via base fixture 186.
Elastomeric element (torsion-coil spring) 180 is at the inner peripheral surface of the magnet 123 of movable body 120, and the mode that is positioned at the circumferential center of utmost point tooth 115b, the 116b of fixed body 110 with the switching position of the different magnetizing surface of adjacent magnetic positions.
In addition, elastomeric element (torsion-coil spring) 180 can obtain certain spring constant with respect to the rotation direction of magnet 123, and movable body 120 is along circumferentially carrying out activity.Utilize the resonance frequency that this elastomeric element 180 can adjusting actuator 100.
In the actuator 100 of said structure, by the AC wave to coil 114b input, upper lower yoke 115,116 is that utmost point tooth 115b, 116b are magnetized, and the magnet 123 of movable body 120 is produced to magnetic attraction and repulsive force effectively.Thus, the magnet 123 of movable body 120 is take the center of utmost point tooth 115b, 116b that becomes reference position as benchmark, and along circumferentially carrying out way moving, thus, magnet 123 self carries out reciprocating rotation centered by rotation axis 122.
In the actuator 100 of present embodiment, the inertia of supposing movable body 120 is that the spring constant of J, torsional direction is K spsituation under, movable body 120 is the resonance frequency f to calculate by following formula (1) with respect to fixed body 110 r[Hz] vibrates.
[formula 1]
f r = 1 2 π K sp J . . . ( 1 )
F r: resonance frequency [Hz]
The actuator 100 of present embodiment utilizes the resonance frequency f of alternating current supply unit 190 to coil 114b supply and movable body 120 rthe alternating current of roughly equal frequency.Thus, can drive efficiently movable body 120.
The movable body 120 of this actuator 100 becomes the state supporting with the spring mass system structure being supported by fixed body 110 via elastomeric element 180.Thus, if supply with and the resonance frequency f of movable body 120 to coil 114b rthe alternating current of equal frequency, movable body 120 is driven with resonance state.The rotation double vibrations now producing is passed to the arm 121 of movable body 120.
The equation of motion of actuator 100 based on representing with following formula (2) and driving by the circuit equation of following formula (3) expression.
[formula 2]
J d 2 θ ( t ) d t 2 = K t i ( t ) - K sp θ ( t ) - D dθ ( t ) dt - T load - - - ( 2 )
J: moment of inertia [Kgm 2]
θ (t): angle [rad]
K t: torque coefficient [Nm/A]
I (t): electric current [A]
K sp: spring constant [Nm/rad]
D: damping coefficient [Nm/ (rad/s)]
T load: load torque [Nm]
[formula 3]
e ( t ) = Ri ( t ) + L di ( t ) dt + K e dθ ( t ) dt - - - ( 3 )
E (t): voltage [V]
R: resistance [Ω]
L: inductance [H]
K e: back electromotive force constant [V/ (rad/s)]
, the moment of inertia J[Kgm of actuator 100 2], anglec of rotation θ (t) [rad], torque coefficient K t[Nm/A], current i (t) [A], spring constant K sp[Nm/rad], damping coefficient D[Nm/ (rad/s)], load torque T load[Nm] etc. can suitably change in the scope that meets formula (2).In addition, voltage e (t) [V], resistance R [Ω], inductance L [H], back electromotive force constant K e[V/ (rad/s)] can suitably change in the scope that meets formula (3).
The concrete action of actuator 100 then, is described.Fig. 6 is the top plan view of the action for actuator 100 is described.
Electric current is to flow to the coil 114b (this direction is called to forward current) of coil portion 114 towards D1 shown in arrow in Fig. 5.So, the utmost point tooth 115b of upper yoke 115 is had polarity (at this, being the N utmost point) by excitation, and the utmost point tooth 116b of lower yoke 116 is had the polarity different from utmost point tooth 115b (at this, being the S utmost point) by excitation.Opposed with these utmost point teeth 115b, 116b, be reference position in the center of each utmost point tooth 115b, 116b circumferential (rotation direction), dispose the separator bar of the magnetic pole strength (S, N) of the magnet 123 of movable body 120.Therefore, in magnet 123, spread all over whole inner peripheral surface, N pole-face is that utmost point tooth 115b attracts by S pole-face, and the S pole-face of magnet 123 is that utmost point tooth 116b attracts by N utmost point tooth, and, mutually exclusive between homopolarity.Thus, at whole maximum moment of torsion (arrow D2) of generation of the whole interior week of magnet 123, magnet 123 rotates along arrow D2 direction (at this, being counterclockwise).
So, as shown in Figure 6A, each pole-face of magnet 123 will be stopped in opposed position by utmost point tooth 115b, the 116b of excitation with the magnetic pole with relative.For example, magnetic pole strength S1 is being that whole opposed position of N magnetic pole strength (utmost point tooth 115b-1) will stop from the different pole-faces of fixed body 110 sides.In addition, in this position, with in the end limit circumferentially separating on utmost point tooth 115b, be positioned at magnet 123 direction of rotation side end limit (for example, end limit 1151) opposed, arrange the end (for example, end SE1) of the magnetic pole strength (for example, S1) of magnet 123.In the time will being positioned at this position, magnet 123 is because the repulsion of the utmost point tooth of the same magnetic pole that approaches with magnet 123 is also to opposite direction (the arrow D4 direction) action torque of arrow D1 direction.In addition, magnet 123 (movable body 120) becomes the state that utilizes the recuperability of elastomeric element 180 and be biased to reference position side.
Under the state shown in this Fig. 6 A, flow to coil portion 114 with the electric current (reverse current) of forward current opposite direction (arrow D3).So, utmost point tooth 115b, 116b polarity separately change, and N utmost point utmost point tooth 115b is originally become the S utmost point by excitation, and S utmost point utmost point tooth 116b is originally become the N utmost point by excitation.Thus, magnet 123 utilizes the magnetic attraction and the magnetic repulsion that between each magnetic pole strength (representing with N in figure) and utmost point tooth 115b, 116b, produce, produces moment of torsion and moves to arrow D4 direction to arrow D4 direction.In addition, the moment of torsion of this arrow D4 direction is also by the recuperability effect of elastomeric element 180.
Flow to the reverse current flows of coil 114b of coil portion 114 till magnet 123 is the state shown in Fig. 6 B with respect to the position of utmost point tooth 115b, 116b.Magnet 123 after Fig. 6 B represents to move along arrow D4.
In Fig. 6 B, rotate backward (rotating along arrow D4 direction) by magnet 123, each pole-face of magnet 123 will be stopped in opposed position by utmost point tooth 115b, the 116b of excitation with the magnetic pole with relative.For example, magnetic pole strength S1 utmost point tooth 115b-1 (the S utmost point) with will stop in adjacent whole the opposed position of utmost point tooth N of the moving direction side of magnet 123.In addition, this position is the position of arranging opposed to each other the end SE1 of the pole-face S1 of magnet 123 in utmost point tooth 115b in the end limit circumferentially separating with the end limit 1152 of rotation direction (D4 direction) side that is positioned at magnet 123.In the time will being positioned at this position, magnet 123 is because the repulsion of the broach of the same magnetic pole that approaches with magnet 123 is also to opposite direction (the arrow D1 direction) action torque of arrow D4 direction.In addition, magnet 123 (movable body 120) becomes the state that utilizes the recuperability of elastomeric element 180 to be biased to reference position side (D1 side).In addition, an end of end SE2 and opposed utmost point tooth N centered by rotation axis 24 at the radial arrangement shape that is in line.
And forward current flows to coil portion 114, thereby again carry out the action shown in Fig. 5 to Fig. 6 A, repeat these actions shown in Fig. 5 and Fig. 6.Thus, the movable body 120 of actuator 100, centered by rotation axis 122, and carries out reciprocating rotation and vibrates centered by reference position, via arm 121 to outside output double vibrations power.
Then the alternating current that, simple declaration is supplied with to the coil 114b of fixed body 110 under the each state shown in Fig. 5 and Fig. 6.
Fig. 7 is illustrated in the actuator of present embodiment, the figure in the cycle of the alternating current of supplying with to the coil 114b of fixed body 110 via substrate 112 from alternating current supply unit 190.
The alternating current that flows to coil can be frequency f as shown in Figure 7 A oimpulse wave, also can be as shown in Figure 7 B, be frequency f osine wave.
Under the state of Fig. 5, supply with the forward current of the moment t1 shown in Fig. 7, under the state of Fig. 6 A as shown in the moment t2 of Fig. 6 the direction of switch current, magnet 123 rotates towards the position of Fig. 6 B and while getting back to the state of Fig. 5, supplies with the reverse current of the moment t3 shown in Fig. 7.In addition, under the state of Fig. 6 B, the direction of switch current as shown in the moment t4 of Fig. 7, magnet 123 rotates and while getting back to the state of Fig. 5, supplies with the forward current of the moment t5 shown in Fig. 7 towards the state of Fig. 6 A.This is the action of one-period, and by repeating such action, movable body 120 repeats the displacement action shown in Fig. 6 A to Fig. 6 B via the state of Fig. 5, is rotated thus double vibrations.
Like this, according to present embodiment, can realize high output with simple magnetic loop structure, cheap material cost, can realize the actuator can constant speed driving.
In addition, magnet 123 becomes circular from the utmost point tooth 115b, the 116b arranged opposite that configure in the different mode of alternating polarity on circumference on fixed body 110, can spread all over and the whole interior Zhou Zuowei drive source of utmost point tooth 115b, the opposed magnet 123 of 116b, can realize the actuator that conversion efficiency is high.
Like this, according to present embodiment, can spread all over all-round generation magnetic attraction, the magnetic repulsion of magnet 123, produce maximum moment of torsion.
In addition, in actuator 100, movable body 120 is rotated reciprocating motion and rotates double vibrations, and this rotation double vibrations is exported to outside via arm 121.On arm 121, be linked with and possess the toothbrush portion of pieces portion that is arranged at head orthogonal to the axial directionly, unlike the prior art, can make toothbrush portion be rotated double vibrations and be rotated to brush teeth simply to construct.In addition, in the situation of actuator 100 for the electric razor as electronic reason container tool, electric shaver, electrodynamic type hair-removing appliance etc., can make blade carry out double vibrations by link blade on arm 121.
Like this, actuator 100 meets formula (2), (3), drives by the covibration of the resonance frequency shown in use formula (1).Thus, in actuator 100, the electric power consuming under stable state is the loss amount that the load torque loss and the friction etc. that cause cause, can drive with low consumption electric power, can make movable body 120 be rotated double vibrations with low consumption electric power.As described above, according to the actuator 100 of present embodiment, can realize with simple structure and low consumption electric power the portable electric reasons such as electric toothbrush, electric razor, electric shaver, electrodynamic type hair-removing appliance and hold the crankmotion of the blade of beauty appliance, without the drive transmission mechanism that uses and comprise the drive source split of actuator 100.
In addition, movable body 120 is supported by elastomeric element (torsion-coil spring) 180 freedom of movement ground, and therefore, spring life is long, can realize long-term driving, can guarantee high reliability.
(execution mode 2)
Fig. 8 is the exploded perspective view of the actuator 100A of embodiment of the present invention 2, and Fig. 9 is the top plan view that represents the magnetic loop of this actuator 100A.
In addition, the actuator 100A of this execution mode 2 is in the structure of the actuator 100 corresponding with the execution mode 1 shown in Fig. 1～Fig. 7, magnet 123 is changed into the structure of magnet 123A.Therefore, actuator 100A has the basic structure same with actuator 100, and for the additional same-sign of identical inscape, the description thereof will be omitted.
Actuator 100A shown in Fig. 8 and Fig. 9 have with fixed body 110A, the movable body 120A of the same formation of fixed body 110 of the actuator 100 of execution mode 1, by movable body 120A freedom of movement be supported in the upper elastomeric element 180 of fixed body 110A, alternating current supply unit 190.The outward appearance of this actuator 100A is the same with actuator 100.
In the actuator 100A shown in Fig. 8 and Fig. 9, movable body 120A utilizes the power supply from alternating current supply unit 190, with respect to fixed body, 110A is movable, the arm 121 of movable body 120A can rotate along both forward and reverse directions (with reference to the direction of arrow of Fig. 1) in the angular range of regulation, exports to outside as rotation double vibrations.
In the movable body 120A of this actuator 100A, in the structure of the movable body 120 of execution mode 1, replace cylinder-shaped magnet 123, possess the magnet 123A being formed by multiple sections of cutting apart.
, movable body 120A has the magnet fixed part 124 of rotation axis 122, magnet 123A, fixed bias circuit 122 and magnet 123A.
Magnet 123A alignment arrangements on circumference has multiple (in this case 12), by polarity and upwards adjacent section is different in week multiple magnet sections 1231,1232 ... form.The utmost point tooth 115b of the magnetic pole strength of these magnet sections 1231,1232 and fixed body 110A, 116b arranged opposite.Magnet section 1231,1232 is used ferrite.In addition, ferrite is compared with Bonded neodymium magnet, and temperature characterisitic is high, therefore, uses ferritic actuator 100A also can be used as vehicle mounted actuator.
Magnet 123A makes magnet section 1231,1232 corresponding with utmost point tooth 115b, the 116b of fixed body 110A, with N, S, N, S, N ... the different opposed mode of face (magnetic pole strength) of alternating polarity is fixed on magnet fixed part 124 like this.
Particularly, magnet section 1231,1232 is installed on the inner peripheral surface of the cylindrical portion of cup-shaped magnet fixed part 124 in the different mode of magnetic of circumferentially adjacent face.The circumferential lengths of each magnet section 1231,1232 is greater than the circumferential lengths of utmost point tooth 115b, 116b.
Magnet 123A is the same with the magnet 123 of execution mode 1, is fixed on rotation axis 122 via magnet fixed part 124.
With respect to the magnetic pole strength of each magnet section 1231,1232 of magnet 123A, utmost point tooth 115b, 116b are positioned at circumferential center CL1 and the position that magnet section 1231,1232 spaced positions from each other CL2 are radially being overlapped centered by axis of rotation separately.In addition, the position CL2 separating is the position that the polarity (magnetic pole strength) of magnet section 1231,1232 in magnet 123A is switched.
Position CL2 is the centre position of 1231,1232 of magnet sections.In addition, center CL1, position CL2 radially (are being radial) to coincide with the position on same straight line, become the action reference position of movable body 120A centered by rotation axis 122.
Like this, actuator 100A compares with actuator 100, and difference is just integrally formed respectively the magnetizing surface (magnetic pole strength) of the magnet 123 of structure by divided magnet section respectively.Therefore, by supplying with alternating-current power supply to coil 114b, can carry out the action same with actuator 100, there is the effect same with actuator 100.
In addition, in actuator 100A, the magnet that makes to be arranged on movable body 120 magnetizes and forms to replace different magnetic at cylindric inner peripheral surface accordingly from the utmost point tooth of fixed body 110, compared with this situation, can more easily manufacture.,, while manufacturing the magnet to arrange along the mode that circumferentially alternately changes magnetic pole strength, at the inner peripheral surface of the cylindrical portion of magnet fixed part 124, as long as alternately change each magnetic pole strength, magnet section 1231,1232 is installed.Thus, without magnetization operation, easily Manufacture Execution device 100A.
(execution mode 3)
Figure 10 is the stereogram that represents the actuator 100B of embodiment of the present invention 3, and Figure 11 is the stereogram representing below this actuator 100B.In addition, Figure 12 is the major part exploded perspective view of this actuator 100B, and Figure 13 is the summary section that represents the major part structure of this actuator 100B, and Figure 14 is the top plan view that represents the magnetic loop of this actuator 100B.
In addition, the actuator 100B of this execution mode 3 is that the position relationship of fixed body and movable body is different, has the same basic structure of the actuator 100 corresponding with the execution mode 1 shown in Fig. 1～Fig. 7.Particularly, the actuator 100 of execution mode 1 is all outer-rotor type with the actuator 100A of execution mode 2, and in contrast, actuator 100B is inner-rotor type actuator.Thus, for the inscape mark same-sign with same function, the description thereof will be omitted.
Actuator 100B shown in Figure 10 and Figure 11 has: fixed body 110B, movable body 120B (with reference to Figure 12), by movable body 120B freedom of movement be supported in elastomeric element (resiliency supported portion) 180 (with reference to Figure 11) and the alternating current supply unit 190 (with reference to Figure 12) on fixed body 110B.
In the actuator 100B shown in Figure 10, the output arm 126B of movable body 120B is by the supply of the AC wave from alternating current supply unit 190 (with reference to Figure 12), in the angular range of regulation, rotate along both forward and reverse directions (direction of arrow of Figure 10), export to outside as rotation double vibrations.
Fixed body 110B shown in Figure 11～Figure 13 has: base plate 111B, circular coil portion 114B, have along upper lower yoke 115B, 116B and the housing 117 of the comb teeth-shaped of the utmost point tooth 1155,1165 of the interior week configuration of coil portion 114B.
As shown in Figure 11～Figure 13, in fixed body 110B, with the peristome of the central portion that is arranged at base plate 111B, bearing 113B is installed communicatively.In the peristome of these base plates 111B and bearing 113B, insert the rotation axis 122B of movable body 120B.Bearing 113B rotates the freely rotation axis 122B of pivotal support movable body 120B.
On this bearing 113B, dispose the coil portion 114B from axially sandwiching by upper lower yoke 115B, 116B to surround the mode of movable body 120B.
Coil portion 114B is that winding around 1142 forms on coil rack 1141.Coil rack 1141 together with coil 1142 for generation of the drive source of actuator 100B.Coil rack 1141 is same axle center with the axle of rotation axis 122B and coil 1142.
The coil windings of coil 1142 is connected with substrate (omitting diagram), is connected with outside terminal via this substrate.Supply with AC power (alternating voltage) from alternating current supply unit 190 to coil 1142 via outside terminal.
Upper lower yoke 115B, 116B are magnetics, are comb teeth-shaped and possess the vertically disposed utmost point tooth 1155,1165 of inner peripheral from the flat body board 1154,1164 of annulus.Upper lower yoke 115B, 116B are to enter the mutual noncontact configuration of mode of coil portion 114B from axial clamp.Upper lower yoke 115B, 116B body board 1154,1164 is separately in coil portion 114B, with the top and bottom arranged opposite of axial separation, upper lower yoke 115B, 116B utmost point tooth 1155,1165 is separately with the mode alternative arrangement of the inner peripheral surface of encirclement coil portion 114B.
Particularly, upper yoke 115B embeds from the upside of coil portion 114B, and its body board 1154 is opposed above with coil portion 114B's, and utmost point tooth 1155 is comb teeth-shaped (separating predetermined distance) along the inner peripheral surface of coil portion 114B and arranges.Lower yoke 116B embeds from the downside of coil portion 114B, and body board 1164 is opposed below with coil portion 114B, and utmost point tooth 1165 is similarly disposed at along between the utmost point tooth 1155 of the inner peripheral surface layout of coil portion 114B.
The utmost point tooth 1155,1165 of upper lower yoke 115B, 116B becomes the number of poles equating with the number of magnetic poles of the magnet 123B (following) of movable body 120B.
According to this structure, if supply with AC power to coil 1142, go up yoke 115B and lower yoke 116B is become mutually different polarity by excitation respectively, upper lower yoke 115B, 116B utmost point tooth 1155,1165 separately also with different polarity by excitation.,, at the inner peripheral surface of coil portion 114B, dispose different magnetic pole strengths along inner peripheral surface alternative arrangement.
The polarity of these utmost point teeth 1155,1165 is by replacing change to coil portion 114B supply forward and reverse electric current.
The mode that these coil portions 114B is covered from top with the housing 117 of cup-shaped is installed on base plate 111B.
Opposed with the utmost point tooth 1155,1165 of the inner peripheral surface configuration along coil portion 114B, separate predetermined distance and dispose the magnet 123B of movable body 120B.
In addition, utmost point tooth 1155,1165 is 12 utmost points with the number of poles (following) of corresponding magnet, but as long as 2 extremely more than, several utmost points can.Be not limited to this, as long as multipole.
Movable body 120 has rotation axis 122B, magnet 123B, magnet 123B is fixed on to the rotor 124B on rotation axis 122B.
As shown in figure 14, magnet 123B is the columnar magnet forming that magnetized by multipole (at this 12 utmost point), for example, can use Bonded neodymium magnet.
Particularly, magnet 123B is at the outer peripheral face corresponding with utmost point tooth 1155,1165, with N, S, N, S, N ... replace so different polarity and be magnetized.Each of each magnetizing surface (N magnetic pole strength, S magnetic pole strength) circumferentially (at this, for week upwards with the direction of rotating shaft direct cross) circumferential lengths of length and utmost point tooth 1155,1165 is roughly equal.In addition, magnet 123B is the structure of cylindrical shape and one, but in Figure 14, and the position of switching as the polarity of adjacent magnetizing surface for convenience's sake, illustrates with the line of separation.
The magnet 123B therein heart is pressed into and is fixed with rotation axis 122B, and is embedded in the outer peripheral face of the rotor 124B of the radius with specific length outward.Magnet 123B and rotation axis 122B, rotor 124B and output arm 126B form movable body 120B jointly.
In addition, with respect to the magnetizing surface (N magnetic pole strength, S magnetic pole strength) of magnet 123B, utmost point tooth 1155,1165 is positioned at the position that circumferential center CL1 separately is radially overlapping centered by axis of rotation with position (separating the position of magnetizing surface N, the S) CL2 of magnetizing surface N, the S switching of magnet 123B.In addition, center CL1, position CL2 become the action reference position of movable body 120B radially (being radial) to coincide with position on same straight line centered by rotation axis 122B.
Rotation axis 122B, by an end of the top plate portion of break-through housing 117, is fixed with the output arm 126B of orthogonal extension above housing 117.Actuator 100B via this output arm 126B to outside transmission of drive force.
The other end break-through base plate 111B of this rotation axis 122B.This other end, in the rear side of base plate 111B, is fixed on base plate 111B via elastomeric element 180.
Elastomeric element 180, with respect to fixed body 110B resiliency supported movable body 120B, at this, as elastomeric element 180, can use torsion-coil spring.
As an end of the torsion-coil spring of elastomeric element 180, be fixed on rotation axis 122B via axle fixture 184 upper, and the other end is fixed on base plate 111B via base fixture 186.
Elastomeric element (torsion-coil spring) 180 is at the outer peripheral face of the magnet 123B of movable body 120B, and the mode that is positioned at the circumferential center of the utmost point tooth 1155,1165 of fixed body 110B with the spaced-apart locations of adjacent magnetic different magnetizing surface N, S positions.
In addition, elastomeric element (torsion-coil spring) 180 rotation directions with respect to magnet 123B can obtain certain spring constant, and movable body 120B is along circumferentially movable.
In the actuator 100B of said structure, utilize the AC wave of inputting to coil 1142, upper lower yoke 115B, 116B are that utmost point tooth 1155,1165 is magnetized, and the magnet 123B of movable body 120B is produced to magnetic attraction and repulsive force effectively.Thus, the magnet 123B of movable body 120B is take the center of utmost point tooth 1155,1165 that becomes reference position as benchmark, and along circumferentially moving left and right, thus, magnet 123B self carries out reciprocating rotation centered by rotation axis 122B.
This actuator 100B meets formula (2), (3), drives according to the covibration that adopts the resonance frequency representing by formula (1).This driving is identical with actuator 100, and therefore, description thereof is omitted.The electric power consuming under stable state is the loss that the load torque loss and the friction etc. that cause cause, can drive with low consumption electric power, can make movable body 120B be rotated double vibrations with low consumption electric power.
This actuator 100B can be applicable to electronic reason such as electric toothbrush, electric razor, electric shaver, electric clipper same with actuator 100 held beauty appliance.Thus, can realize the crankmotion that these electronic reasons are held the blade of beauty appliance, the drive transmission mechanism without use with drive source split with low consumption electric power.
In addition, in each execution mode, by expanding as much as possible and the magnetic pole strength of the opposed utmost point tooth of magnetic pole strength of magnet 123,123A, 123B, can increase reciprocating rotary scope as the operating angle of hunting range.
In addition, the invention described above can without departing from the spirit of the invention within the scope, be carried out various changes, and the present invention also comprises the mode that obtains after this change of carrying out certainly.
Industrial applicibility
Actuator of the present invention and electronic reason hold that beauty appliance is simple in structure, energy conversion efficiency is high, have the effect that realizes high output, can be applicable to electric razor, electric toothbrush etc.

Claims (7)

1. an actuator, is characterized in that, has:
Movable body, possesses at side face along the magnet portion cylindraceous circumferentially alternately with N magnetic pole strength and S magnetic pole strength; And
Fixed body, possesses: opposed with the side face of described magnet portion, spread all over circumferentially and configure, and with described N magnetic pole strength and the described S magnetic pole strength utmost point flank of tooth with quantity; With the alternating current that is supplied to the frequency roughly equal with the resonance frequency of described movable body, the described utmost point flank of tooth is carried out to the coil of excitation to replace different polarity on circumferentially,
Described movable body, rotates and is freely held on described fixed body as rotating reference position using the opposed position of switching position of the circumferential center of the described utmost point flank of tooth and the magnetic pole strength of described magnet portion.
2. actuator as claimed in claim 1, is characterized in that,
Described movable body utilization is supported in described movable body on described fixed body to the elastomer of the described rotation reference position application of force.
3. actuator as claimed in claim 1, is characterized in that,
Described magnet portion is made up of the multiple sections of cutting apart that possess respectively described N magnetic pole strength and described S magnetic pole strength.
4. the actuator as described in any one in claim 1～3, is characterized in that,
Described elastomer is torsion-coil spring.
5. the actuator as described in any one in claim 1～4, is characterized in that,
The side face of described magnet portion is inner peripheral surface, and described fixed body has and the opposed outer peripheral face of described inner peripheral surface, and the described utmost point flank of tooth is along being circumferentially disposed on this outer peripheral face.
6. the actuator as described in any one in claim 1～4, is characterized in that,
The side face of described magnet portion is outer peripheral face, and described fixed body has and the opposed inner peripheral surface of described outer peripheral face, and the described utmost point flank of tooth is along being circumferentially disposed on this inner peripheral surface.
7. electronic reason is held a beauty appliance, it is characterized in that possessing the actuator described in any one in claim 1～6.
CN201310654087.XA 2012-11-01 2013-10-31 Actuator and electronic reason hold beauty appliance Active CN103812299B (en)

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CN103812299B (en) 2017-07-18
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US20160322889A1 (en) 2016-11-03
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JP5842789B2 (en) 2016-01-13
US10177639B2 (en) 2019-01-08
US20140117788A1 (en) 2014-05-01
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CN107370324A (en) 2017-11-21
US9419507B2 (en) 2016-08-16

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